#include<stdio.h>
#include<string.h>
#include<sys/stat.h>
#include<unistd.h>
#include<sys/types.h>
#include<fcntl.h>

int main()
{
  int fd = open("./io.cpp",O_RDONLY,0644);
  dup2(fd,0);
  char buff[128];
  while(fgets(buff,sizeof(buff),stdin))
  {
    printf("%s",buff);
  }
}
